Meet Our Team Dr. Henry Higgins Chief Executive Officer Mary Dale Chief Operating Officer Dr. Than Greenwood Emergency Room Physician | Chief Medical Officer Dr. Daniel Matulich Chief Financial Officer Susie Williamson Vice President of Operations & Financial Management Jennifer Patton Chief Nursing Officer Liza Castano Director of Human Resources Jennifer Stratton Director of Communications Isaac Higgins Director of Implementation & Technology Marc Daniels Director of Laboratory Services Bruce Campbell Chief Imaging Officer Dan Hobson Rise Director & Business Development Eric Johnson Area Director of Nebraska Hospitals Jeffrey Livingston Area Director of Texas Hospitals Matt Lockett Area Director of Operational Support Melissa Gerhardt Billing & Registration Department Head Matt Alewine Purchasing Manager Melanie Gray PI Liaison Supervisor Nicole Campbell Claims Analyst